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8d1cfaabe7
NuDB is a high performance key/value database optimized for insert-only workloads, with these features: * Low memory footprint * Values are immutable * Value sizes from 1 2^48 bytes (281TB) * All keys are the same size * Performance independent of growth * Optimized for concurrent fetch * Key file can be rebuilt if needed * Inserts are atomic and consistent * Data file may be iterated, index rebuilt. * Key and data files may be on different volumes * Hardened against algorithmic complexity attacks * Header-only, nothing to build or link
110 lines
2.7 KiB
C++
110 lines
2.7 KiB
C++
//------------------------------------------------------------------------------
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/*
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This file is part of Beast: https://github.com/vinniefalco/Beast
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Copyright 2014, Vinnie Falco <vinnie.falco@gmail.com>
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Permission to use, copy, modify, and/or distribute this software for any
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purpose with or without fee is hereby granted, provided that the above
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copyright notice and this permission notice appear in all copies.
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THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
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WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
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MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
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ANY SPECIAL , DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
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WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
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ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
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OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
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*/
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//==============================================================================
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#ifndef BEAST_NUDB_ERROR_H_INCLUDED
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#define BEAST_NUDB_ERROR_H_INCLUDED
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#include <beast/nudb/detail/config.h>
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#include <beast/utility/noexcept.h>
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#include <stdexcept>
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#include <string>
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namespace beast {
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namespace nudb {
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// All exceptions thrown by nudb are derived
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// from std::exception except for fail_error
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/** Base class for all errors thrown by file classes. */
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struct file_error : std::runtime_error
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{
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explicit
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file_error (char const* s)
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: std::runtime_error(s)
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{
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}
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explicit
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file_error (std::string const& s)
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: std::runtime_error(s)
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{
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}
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};
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/** Thrown when file bytes read are less than requested. */
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struct file_short_read_error : file_error
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{
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file_short_read_error()
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: file_error (
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"nudb: short read")
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{
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}
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};
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/** Thrown when file bytes written are less than requested. */
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struct file_short_write_error : file_error
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{
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file_short_write_error()
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: file_error (
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"nudb: short write")
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{
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}
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};
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/** Base class for all exceptions thrown by store. */
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class store_error : public std::runtime_error
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{
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public:
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explicit
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store_error (char const* m)
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: std::runtime_error(
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std::string("nudb: ") + m)
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{
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}
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explicit
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store_error (std::string const& m)
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: std::runtime_error(
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std::string("nudb: ") + m)
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{
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}
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};
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/** Thrown when corruption in a file is detected. */
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class store_corrupt_error : public store_error
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{
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public:
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explicit
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store_corrupt_error (char const* m)
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: store_error (m)
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{
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}
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explicit
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store_corrupt_error (std::string const& m)
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: store_error (m)
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{
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}
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};
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} // nudb
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} // beast
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#endif
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